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Espresso and fresh-brew coffee brewing unit

a coffee brewing unit and espresso technology, applied in beverage vessels, household appliances, kitchen equipment, etc., can solve the problems of complicated and expensive, and achieve the effect of cheap and easy production

Active Publication Date: 2019-03-12
N& W GLOBAL VENDING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The design simplifies the production process, reduces costs, and effectively switches between espresso and fresh-brew coffee modes using a more straightforward and cost-effective mechanism, improving the brewing unit's overall efficiency and ease of use.

Problems solved by technology

A brewing unit of this type is known, for example, from EP 1 267 685, and has the drawback of employing an adjustable-flow pump—more specifically, an electromagnetic, adjustable-stroke and / or adjustable-frequency pump, in itself complicated and expensive—in combination with valve means (not easy to produce) for selecting the first or second outlet conduit in response to pressure values generated inside the brewing chamber by the selected pump flow values.

Method used

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  • Espresso and fresh-brew coffee brewing unit
  • Espresso and fresh-brew coffee brewing unit
  • Espresso and fresh-brew coffee brewing unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014]Number 1 in FIG. 1 indicates as a whole a brewing unit for selectively making espresso coffee (hereinafter ES coffee) and fresh-brew coffee (hereinafter FB coffee).

[0015]Unit 1 comprises a tank 2 for a given amount of water, the outlet of which is connected via a volume meter 3 to the inlet of a pump 4—preferably an electromagnetic, constant-frequency pump with a fixed maximum stroke—outlet-connected via a boiler 5 to an inlet conduit 6 of a brewing assembly 7 having an ES coffee outlet conduit 8 and FB coffee outlet conduit 9, which are located relatively close to each other, downstream from brewing assembly 7, to dispense the respective coffee beverages from respective spouts (not shown).

[0016]Unit 1 comprises a solenoid valve 10 along inlet conduit 6, directly downstream from boiler 5; and a bypass conduit 11 extending through a further solenoid valve 12, and which connects a point along outlet conduit 9 to a point downstream from solenoid valve 10 along inlet conduit 6.

[00...

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PUM

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Abstract

A brewing unit for making espresso (ES) and fresh-brew (FB) coffee, wherein the brewing chamber of a brewing assembly is supplied with water by a constant-frequency pump, and communicates with a first ES coffee outlet conduit, controlled by a calibrated valve, and a second FB coffee outlet conduit via a three-way COV (contact-operated) switch valve, which is formed in a compression piston for closing the brewing chamber, and is designed to be set to a normal open position, in which the first and second outlet conduit and a delivery manifold communicate with one another, and to switch, in use and in opposition to a spring, to a closed position, in which the second outlet conduit is closed, and the first outlet conduit communicates with the delivery manifold.

Description

TECHNICAL FIELD[0001]The present invention relates to an espresso (ES) and fresh-brew (FB) coffee brewing unit.[0002]More specifically, the present invention relates to an ES and FB coffee brewing unit of the type comprising a brewing assembly, and a pump for feeding water to the brewing assembly; the brewing assembly comprising a brewing chamber having and axis and designed to receive a measure of ground coffee; an inlet conduit for a given water supply from the pump; closing means movable along said axis to adjust the volume of the brewing chamber; a first ES coffee outlet conduit; a second FB coffee outlet conduit; and a delivery manifold connecting the brewing chamber to the first and second outlet conduit.BACKGROUND ART[0003]A brewing unit of this type is known, for example, from EP 1 267 685, and has the drawback of employing an adjustable-flow pump—more specifically, an electromagnetic, adjustable-stroke and / or adjustable-frequency pump, in itself complicated and expensive—in...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A47J31/46A47J31/06A47J31/36
CPCA47J31/46A47J31/36A47J31/0647A47J31/461A47J31/469A47J31/3609
Inventor CORTI, ROBERTO
Owner N& W GLOBAL VENDING